Journal of Failure Analysis and Prevention

, Volume 6, Issue 1, pp 111–122 | Cite as

Failure analysis of A286 carrier panel fasteners

  • T. Collins
Peer Reviewed Articles
  • 144 Downloads

Abstract

The observation that carrier panel fasteners recovered from the Columbia appeared to have fractured with minimal macroscopic ductility led to concern that stress-corrosion cracking (SCC) or other age-related degradation processes in the A286 bolts may have been the cause of failure during re-entry. To assess this hypothesis, several recovered fasteners having a brittle fracture appearance and several fasteners that fractured in a more ductile mode were analyzed. The results provided the information necessary to discount the “stress-corrosion” hypothesis and conclude that the fasteners failed by some unidentified tensile load after being weakened by high-temperature grain growth and liquid aluminum attack.

Keywords

A286 stainless steel Columbia fastener high-temperature intergranular 

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Copyright information

© ASM International 2006

Authors and Affiliations

  • T. Collins
    • 1
  1. 1.Boeing M&PEHuntington Beach

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